Prizefight

Every fight spell carries the same tax: the creature you send in absorbs the enemy's power right back, so an exchange that goes sideways can leave you down a body and down the mana you spent to force it. This one blunts that tax with a Treasure. Whether your fatty flattens a small blocker cleanly or your target bites back hard enough to trade, the token partly reimburses the spell, converting the exchange from a gamble into a transaction: fight damage for board interaction, with a fungible mana returned no matter how the bodies shake out. Instant speed is where that refund earns its keep. You can ambush an attacker once blocks are locked, or force the fight on an opponent's turn, then crack the Treasure the same turn for a splashed spell or a trick you otherwise could not cast. Green's interaction has long been welded to combat, unable to answer much at instant speed without a creature standing in the way; folding a resource generator onto that combat-gated removal is the kind of small efficiency that earns a green removal package its slots. It is not a showpiece: it is fight-based removal with the return-damage risk partly subsidized, precisely the tuning this style of spell had always been missing.